Very tame. No nudity.

Episode 6 - a character remarks about Hikari "You're a real wild horse, aren't you?" then asks her, "Is Kei able to ride you?" Hikari seems dumbfounded at the remark. Not sure if this is a translation issue or the character is being dirty minded.

Episode 8 - Hikari is in a swimsuit and Kei ends up with her cleavage in his face.

Lots of slapstick violence.

Tadashi is beaten senseless by Akira in almost every episode. This is done for comic effect.

Some uses of 'bastard' and 'damn'.